Re: Frequency regulation
It's easy keeping each windmill in sync with the grid using power converters, but they can only follow, never lead. i.e. When the load is too high on conventional generation plant and the frequency drops, they can only match that frequency, and not bring it back up to nominal, as starting more conventional plant would. You then get the situation where you have enough power, but the grid has to load shed not so as not to cause a frequency excursion.